Gregg A R, Weiner C P
Department of Obstetrics and Gynecology, University of Iowa Hospitals and Clinics, Iowa City 52242.
Clin Obstet Gynecol. 1993 Mar;36(1):24-32. doi: 10.1097/00003081-199303000-00006.
Study groups often considered representative of entire populations inevitably do not consider normal fetuses because nonpathologic events can alter the study parameters. Therefore, the term "normal" and its range, when used for comparisons, must be scrutinized by the obstetrician, pediatrician, and those with medicolegal concerns.
常被视为代表整个人口群体的研究组不可避免地没有将正常胎儿纳入考虑，因为非病理性事件可能会改变研究参数。因此，当“正常”一词及其范围用于比较时，产科医生、儿科医生以及涉及法医学问题的人员必须对其进行仔细审查。
